Universal stoneworking-machine.



0. BAUER. UNIVERSAL STONBWORKING MACHINE. APPLICATION FILED MAR. 9,1914. 1,1 12,250. Patented se t. 29, 1914.

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jg Ora?! Zazayr 8y M ATTORNEYS IHE NORRIS PETERS Cot. PHOTO-LITHQWASHINGTON D. Q

I O. BAUER. UNIVERSAL STONEWORKING MACHINE. APPLICATION FILED MAR. 9,1914.

Patented Sept. 29, 1914.

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"WE/V TOR WIT/V5885? 0 j Jcar we? j (3 m1 By W ATTORNEYS 11/15 NORRISFEYLRQ 01.. I'HOTOJJIHQ. WASJ/INGION. D1 (1 UNITED STATES PATENT OFFICE.

OSCAR BAUER, OF NEW YORK, N. Y.

UNIVERSAL sronnwonKrnG-MAo -nnn.

1,112,250. sp fi of er ma my Patented Sept. 29 191a.

Application filed March 9, 1914. Serial No. 823,589. i J g Fig. 1, Ishow at 10 a vertical driving shaft having associated therewith tightand loose pulleys 11 whereby the rotation of the shaft may be controlledfrom any suitable source of power (not shown). Said shaft is journaledin bearings 12 and 13, and arranged parallel thereto is an adjustingscrew 1 1 cooperating with thebodyof a frame 15 occupying-asubstantially vertical plane 00- incidentwith the axes of the shaft 10and screw 14;. The outer end of the frame member 15 carries acountershaft 16 having a pair of pulleys 17 and 18. The shaft 10 has apulley 19 from which a belt 20 operates over thepulley 17, driving thecountershaft and larger pulley -18. At21 I show a well known form ofradius arm journaled for free swinging movement around the axis of thecountershaft 16 and carrying at its outer end a shaft 22 rotated by abelt 23 leading from the pulley 18 to and around a smaller pulley 24connected to the shaft. A grinding wheel 25 of any suitable character isconnected to the lower end of the wheel shaft 22 and hence is driventherewith from the initial shaft 16 in all positions of adjustment ofthe radius arm 21. a

At 26 I show a lever associated with a rock shaft 27 for the purpose ofrotating the screw 1 1. through gearing 28 from the driving shaft 10 forthe ordinary vertical adjustments of the frame 15 and parts associatedtherewith. a

As shown in Fig. 1, the screw 14 is extended downwardly below theframe'15 and j is connected by chain and sprocket gearing 29 with acomparatively short vertical shaft 30 in alinementwith the driving shaft10 and arranged in bearings below the same. NVhile the frame 15 isadapted to swing lat- "erally in either direction around the axis of thedriving shaft 10, the screw 14 and gearing 29 are adapted to swingsimilarly.

At 31 Ishow a, work supporting bed of ,any usual or approvedconstruction and associated therewith and extending preferablyvertically therethrough is a non-rotary ad- .justmentscrew 32 carryingat its upper end a cross head 33. The screw 32 is supported upon andadjusted by means of a rotary nut 34: to which are connected sprocketgears 35 and 36. Said nut is journaled upon a base member 37 where it issecured by a collar 38 beneath the bed 31. A sprocket chain 39 leadsfrom a sprocket gear 40 connected tothe short shaft 30 to the sprocketTo all whom it may concern: 1

Be it known that I, OSCAR BAUER, a citizen of the United States, and aresident of the city of New York, borough of Brooklyn,

5 in the county of Kings and State of New York, have invented a new andImproved Universal Stoneworking-.Machine, of which the following is afull, clear, and exact description. j

L0 This invention relates to grinding and polishing machines, andparticularly such machines as are employed in stone dressing andfinishing.

Among the objects of theinvention is to 15 provide an. attachment for anordinary polishing machine whereby the grinding wheel may be adjustedvertically simultaneously with the usual adjustments of the radius armsof the machine.

20 Another object of the invention is to provide a means formanipulating the Vertically adjusting mechanism by hand auxiliary to theusual power driven adjusting devices.

A still further object of the invention is 5 to provide, in connectionwith the bedof the machine, a centering or supporting screw 1 and toconnect to said screw a cross head for the support of a guide armassociatedwith the axis of the grinding wheel.

30 The foregoing and other objects of the invention will hereinafter bemore 1 fully described and claimed andillustratedin the drawings forminga part of this specification in which like characters of referenceindicate 35 corresponding parts in all the views, and in which- 1 Figure1 is a side elevation of a preferred embodiment of the inventionshown inconnection with a well known type of polishing 40 wheel machine; Fig. 2is a detail view showing the means for supporting and adjusting theguide bar supporting screw; Fig. 3 is a plan view showing the deviceadapted for dressing curved surfaces; and Fig. 4; is a 45 similar viewshowing the adaptation of the improvement to the finishing of straightsur faces. 1

The several parts of the device may be made of any suitable materials,and the rela- 50 tive sizes and proportions, as well as the generaldesign of the mechanism, may be varied to a considerable extent withoutdeparting from the spirit of the invention hereinafter more fully setforth and specifi- 55 cally claimed.

Referring briefly to the illustration in same size.

taneouslywith the ad ustment of the main slight adjustment may rotateidly and end of the auxiliary screw 32 is adapted to .swivel freely uponsaid which is mounted a guide When both set screws 45 and 47 are loose'date itself to the movements of the radius wheel 35 whereby rotation ofthe screw 14: will cause rotation of the short shaft 30 and nut 34, suchrotation being simultaneously and at the same angular velocity due tothe fact that the several sprocket wheels so far referred to are all ofthe It follows, therefore, that simulframe 15 and radius arm 21 byoperation of the main screw 14, the auxiliary screw 32 will cause theadjustment of the cross head 33 in the same direction.

At 41 I show a hand wheel adjacent the front of the bed and within easyreach of the operator, said wheel being connected to a" short verticalshaft 42. A sprocket chain 43 leads from a sprocket wheel 44 connectedto the cross head 33 to and around the aforesaid sprocket wheel 36connected to the nut. By manipulation of the hand wheel 41 the operatoris enabled to adjust the mechanism by hand when a comparatively isrequired to delicately position the mechanism. hen, however, the.adjustment is being efi ected by means of the main screw 14, the handwheel 41 with no effect.

The cross head 33 carried by the upper be locked thereto by any suitablemeans such, for instance, as a set screw 45, but under ordinarycircumstances it is allowed to screw. The cross head also includes ahorizontal socket in bar 46 which may slide freely through the socket orbe secured therein in fixed position by means of a set screw 47. Theouter end of the guide bar may constitute a handle whereby the op eratormay manipulate the grinding wheel 25, the shaft of which is extendedthrough or journaled in a bearing 48 of said bar.

7 it is obvious that the guide bar etewill be free to rotate around theaxis of the screw 32 and also slide longitudinally through the socket ofthe cross head so as to accommoarm 21 for poses.

As shown in Fig. 3, the set screw 47 upon being set to lock the guidebar to the socket piece, the bar constitutesa radius arm for dressingcurved surfaces having a center of 1 general cutting or polishing pur-Gopies of this patent may he obtained for five cents each, by

a frame connected to bed beneath curvature coincident with the axis ofthe screw, as shown at V. When, however, as shown in Fig. 4, a straightsurface is desired to be dressed as shown at W the set screw 47 may beloosened and any suitable guiding means G associated with the spindle ofthe wheel 25 may be provided to cause the axis of the shaft 22 to becaused to operate in a plane parallel with it carrying the cutting wheelin a straight line in any desired direction.

Having thus described my invention, I claim as new and desire to secureby Let ters Patent 1. The combination with a driving shaft, a grindingwheel, supporting means extending from the shaft to said wheel, and apower screw adapted to vertically adjust said supporting means, of ahand controlled guide member associated with said grinding wheel, andmeans extending from said main power screw to cause the adjustment ofsaid guide member simultaneously with the adjustment of the grindingwheel.

2. The combination with a driving shaft, the driving shaft and adaptedto be swung laterally around the axis thereof, a grinding wheelassociated with the outer end of said frame, a power screw cooperatingwith said frame for lifting or lowering it, and a work supporting thewheel, of an auxiliary screw associated with the bed, a guide barconnected to said auxiliary screw and to the axis of the grinding wheel,and means to operate the main and auxiliary screws simultaneously forlifting and lowering the guide bar simultaneously with the aforesaidmove ments of the frame.

3. In a device of the character set forth, the combination of a guidebar, main and auxiliary screws arranged parallel to each other, saidguide bar being associated with the auxiliary screw, and means forrotating the two screws simultaneously in the same direction either bypower or by hand, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

OSCAR BAUER.

Witnesses Gno. L. Brenna, PHILIP D. RoLLI-IAUs.

addressing the Commissioner of Patents,

Washington, D. G.

